Controlled valve



April 12, 1938. N. MARCUS ,11

CONTROLLED VALVE Filed May 6, 1956 2 Sheets-Sheet 1 April 12, 1938. N.MARCUS CONTROLLED VALVE Filed May 6, 1956 2 Sheets- Sheet 2 INVENTOR MWATTORNEY. M

Patented Apr. 1 2, 1938 UNITED 'srrss 1 Claim.

This invention relates to control devices for valves for hot-watersystems, particularly where steam is used for heatingwater in areservoir, tank or container, and the main object of my invention is toprovide automatic control means for the temperature of the water in thetank through the control of a combined intake and exit valve in a novel,practical and efficient manner.

Another object of my invention is to provide an electrically operatedcontrol means for a valve like the one indicated hereinbefore, saidmeans being controlled by thermostat device in the hot Water reservoiritself.

Still a further object of my invention is to provide a device ascharacterized hereinbefore where the incoming heating medium will becontrolled through the valve but an exit of the used medium from thetank or other heating system will be permitted all the time.

Other objects of the invention will be apparent as the specification ofthe same proceeds, and among others I may mention: to provide a con,-trolled device as indicated, which will be simple M in construction,mainly built up of standard parts, easily available, which will be quickand reliable in operation, will be easy to install and will becomparatively inexpensive to manufacture.

In the drawings forming a part of this specifi- 30 cation andaccompanying the same:

Fig. 1 is a diagrammatical view showing a heating'system with a hotwater tank to which my invention has been applied;

Fig. 2 is a front diagrammatical detail showing the arrangement of mydevice from a room distant from the hot-water tank to be controlled;

' Fig. 3 is a fragmentary sectional detail showing the application of myvalve to a hot-water tank and the electrical control and operating meansfor said valve, while Fig. 4 is a front view of the same detail, and

Fig. 5 is a fragmentary section at the portion of the hot-water tankwallwhere an aquastat is secured therein.

4:; Referring now to the drawings more closely by characters ofreference, the numeral It] indicates the hot-water tank or reservoir ofany usual construction, here a cylindrical one being shown,

which may be fed by cold water through the pipe line H and from whichthe hot-water may be drawn through the, pipe line l2, as it is wellsteam pipe M and an outgoing returning or condensed steam pipe 15, theincoming pipes l4 being fed from the steam in a furnace l 6 through thepipe line i"! and the cooled and condensed heating steam returning fromthe pipes E5 to the water space of said furnace it through the pipe lineIt, as it is also well known and understood by those versed in this art.My novel heating and returning valve is indicated at I9.

My valve construction in the embodiment .10 shown in Figs. 3 and 4 mayhave a base element 2i secured into the front wall of the tank It) as bythe screw threads 2 i through which member 28, pass the incoming orheating pipes M as well as the outgoing or returning pipes l5 On 15 asubstantially'circular flange 22 of saidelement Zil is secured the valvebody proper 23 being divided into an upper chamber 24 and a lowerchamber 25 separated and well sealed from one another. The incoming orheating pipes M will enter the upper chamber 24 and the outgoing orreturning pipes l5 will enter the lower chamber 25, as indicated in Fig.-3. The live steam pipes ll coming from the furnace will be secured intothe upper part of my valve as at 26 and will normally communicate withthe upper chamber 26, while the cool or condensed steam pipelB.returning to the furnace it will be secured to the lower part of myvalve as at'Z'i and will communicate with the lower chamber 25. Apivoted closure flap 28 is arranged within the upper chamber 24 closingon a sealing tube seat 29 and being adapted to close or open thecommunication between the live steam line I l and the chamber '25, aswill be obvious. A crank 30 is provided for the sealing flap 28operated. by a pivoted rod 3| on which is secured a disc 32 being actedupon by the opposing springs 33 and 34 arranged within a U shapedpiece35 having the upper and lower flanges 36 and 3'! for supporting the saidtwo springs, said rod 3| being slidable through,- said flanges 36 and37. An upstandingv plate38 may be secured on the upper portion of thevalve flange 22, and the upper end 39 thereof carries an electricalmotor device ill of any appropriate con- K struction, several of whichare known and used in this art as for instance, the J. E. Motor,manufactured by Minneapolis-Honeywell Regulator Company, which I preferto employ in my de- V vice. A rotating arm 4! is projecting from themotor device lil, operated by the same and a piv oted pin 42 thereof isengaging a boss 43 on the U shape piece 35 whereby upon the rotation ofthe arm 4!, the rod 3! will be given a reciprocat- 5 5 ing upward anddownward movement through the dampening eifect of the springs 33 and 34.

An aquastat device 44 may be secured into the front wall of the tank itor into any appropriate part of said tank, said device also being wellknown in the art as for instance, the so-called aquastat manufactured bythe same Minneapolis-Honeywell Regulator Company, the usual cylindricalportion 45 thereof projecting into the water within the tank l0 andresponding to the temperature changes thereof, as will be understood bythose versed in the art. The aquastat device 44 will be appropriatelyelectrically connected to the motor 40 as by the conductors 45a (Fig. 2)as it is also well known in this art.

The use and operation of my device will be obvious from the hereindescription thereof and by inspecting the drawings accompanying thesame.

Normally, the flap 28 is entirely open being in the dotted positionindicated by 28a and the live steam coming from the line I! has a freeaccess to the heating coils M in the tanklll, will heat the water hereinand the cool or condensed portion thereof will return through the coilsi5 and the pipe line I8. When the temperature of the Water in the tankl0 reaches a certain high point to which the aquastat M is set, the samewill make electrical connections and start electrical impulses in themotor 40 in such a manner that the push rod 3| will be pulled to anupward direction and the flap 28 will be closed upon the seat 29 therebyshutting ofi the incoming steam line I! from the chamber 24 and from theheating coils l4.

The temperature of the water in the tank H] may now drop and when itreaches the lower limit to which said aquastat M is set, the same willagain operate and will send electrical currents through the motor 40,which will cause the motor to resume its motion and to push the rod 3|in a downward direction thereby opening the flap 28,that is, setting thesame into the position indicated at 28a, and thereby allowing the livesteam H to enter the heating coils and to again heat the water in thetank Ii).

It will be seen that according to the consumption of the hot water andthe feeding of cold water into the tank, my valve'will alternately openand close in an automatic manner and will shut off or open the live orheating steam line, while the returning steam line from the tank willalways be left open and free.

The arm 4| of the motor 4% will make a onehalf turn from its lowermostposition to its uppermost position when it is desired to close the flap28, will again make a half turn in the same direction from the uppermostposition to its lowermost position when it is desired to close the flap28, its operation temporarily being stopped at either limit, as will beunderstood and as it is well known and used for other purposes in thisart.

It will be understood that other controls than the electrical may beemployed and that my control valve may be operated manually and that thepartition therein also may be omitted, the whole valve having one singlechamber to be fed by the live steam and from which the heating coilsoriginate, to which they return and from which the condensate returnline will start, the flap device 28 being arranged in a similar mannerto open or close the live steam feeding line. It will also be understoodthat my valve device may be used as an independent unit in any steam,water or similar pipe line where such a valve may be adopted, and thatin the present device other heating medium than steam, may be used, as,for instance, hot water.

It is believed from the above description that those skilled in the artwill have no difliculty in understanding the construction, the method ofuse and operation of the device herein disclosed. The invention is ofsimple and practical construction and is adapted to accomplish amongothers all of the objects and advantages herein set forth.

Without further analysis, the foregoing will so fully reveal the gist ofthis invention that others can by applying current knowledge readilyadapt it for various applications without omitting certain features,that, from the standpoint of the prior art, fairly constitute essentialcharacteristics of the generic or specific aspects of this invention,and therefore, such adaptations should and are intended to becomprehended within the meaning and range of equivalency of thefollowing claim.

What I claim as new, is:

In a hot water heating system having a hot water tank and a source ofheating fluid for said tank, a perforated member sealingly secured intothe wall of said tank, a plurality of U-shaped heating tubes in saidtank, one end of each tube being sealingly secured into a respectiveupper hole in said member, and the return ends of said U-shaped tubesbeing sealingly secured into the respective lower holes in said member,a hollow valve body sealingly secured on said member being divided by ahorizontal partition into an upper and a lower chamber, said upper holesin said member communicating with said upper chamber, said lower holescommunicating with said lower chamber, an intake opening in said upperchamber for the heating fluid and an exit opening in said lower chamberfor the return condensate from said U-tubes, a closure device for saidintake opening in said upper chamber, and means whereby said closuredevice is opened when the temperature of the water in said tank reachesa pre-determined lower limit, and said closure device is closed upon thetemperature of said water reaching pre-determined upper limit, saidmeans comprising an extension for said perforated member, a motorcarried by said extension, a crank on said motor, a U-shaped piecesecured on said tank, a rod sliding through the upstanding flanges ofsaid U-piece and having a disk secured thereon between said flanges, twocoiled springs between the upper and lower flanges and the center disk,respectively, said closure device being connected to said rod in such amanner that a half turn of said motor will close said device, and acontinued half turn of said motor in the same direction will open saidclosure device.

NATHAN MARCUS.

